Shuttle check



Jane 5 19260 $.CHALMERS m- AL SHUTTLE CHECK Filed June 16, 1924 2 Sheets-Sheet 1 IN V EN TORS ATTORNEYS.

Jan.5 ,1926. 1,568,654

s. CHALMERS mm.

SHUTTLE CHECK- Filed June 16'. 1924 2 Sheets-Sheet 2 jam/WM? INVENTQRS A'TTORNEIYS.

Patented Jan. 5, 1926.

UNITEE STATES estates Parana" caries.

SAMUEL CHALMERS, OF NORTH ANDOVER, AND FREDERICK J. FOLEY, 0F METHUEN',

MASSACHUSETTS, ASSIGNORS OF ONE-THIRD TO HIRAM C. STRAKER, OF METHUEN MASSACHUSETTS.

SHUTTLE CHECK.

Application filed June 16, 1924. Serial 1J0. 720,334.

To all whom it may concern:

Be it known that we, SAMUEL GHALMERS, a citizen of Great Britain, and residing at North Andover, in the county of Essex and State of Massachusetts, and FREDERICK J. FOLEY, a citizen of the United States, residing, at Methuen, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Shuttle Checks, of which the following is a specification.

This invention relates to shuttle checks for looms.

The purpose of my invention is to provide a loom shuttle check which will take the place of the binder of wood or o.her material, and the check strap now commonly used.

The advantages of my invention are that it makes little substantial change in the construction of certain types of looms but merely substitutes a strong, simple part for several features.

,My device can be so accurately adjusted that it will stop the shuttle at exactly the right spot. This is particularly necessary in the type of automatic looms in which an old bobbin is replaced automatically by a new bobbin in the shuttle, such looms being known in the trade as Draper looms. In such looms, and in others of a similar type any rebound of the shuttle is to be avoided.

In checking the shuttle after it has been thrown through the warp it is desirable that it should stop gently without injury to any parts, at exactly the right spot, and that it should not be bound so tightly as to require an excess of power in the picker stock to throw it back.

i I accomplish the desired end by so arranging my parts that the shuttle will first pass between a long arm, and the front shuttle binder which will present substantially a long straight surface to the long straight surface of the shuttle, which will be finally checked by another spring arm against which the tapered point of the shuttle will impinge and compress or force it back until the shuttle is stopped at exactly the right point.

Fig. 1 is a plan view of one end of a lay beam showing the parts which are affected by my device, a shuttle being shown as just engaging the long arm of my shuttle check,

Fig. 2 is a sectional elevation on line 22 of Fig. l with shuttle removed, lookin in the direction of the arrows. b

Fig. 3 is a sectional plan view on the line 33 of Fig. 2 looking down and showing a shuttle at rest at the end of its traverse.

Fig. 4 1s a plan view similar to Fig. 1 showing the parts affected by my device, and a shuttle just engaging a long arm of a type of shuttle check which I may use in some classes of looms.

Fig. 5 is a View similar to Fig. 3, of the type of the shuttle check shown in Fig. 4.

In the drawings L is a lay beam on the top of which is the race 12. 10 represents what I will call the front, and 11 the back of the lay.

G is the shuttle guide which extends over the race and keeps the shuttle down on the lay as it emerges from the warp.

Its front face 9 points along the lay beam in the direction the back side of the shuttle travels along the lay beam or race.

P represents the picker or picker stick, and B represents the front binder which is adjustable by means of the adjusting screws 7 and 8, and slopes at each end 5 and 6 in a well known manner from its flat face 36.

This face 36 is so adjusted that the space between its inner end 37 and the face 9 is greater than the width of the shuttle, while the distance from its outer end 38 to the face of the short arm 25 of my shuttle binder A is less than the width of the shuttle.

S represents a shuttle having points 30, 30, from which it tapers at each end to a base 31.. Thence there is a substantially flat face 32, 32, on each side. R represents the protector rod finger which is normally pressed against tip 20 of my shuttle binder A by the protector rod spring N generally used in such looms and protector rod O.

All the above are of well known construc tion.

F represents an adjustable pivot stud including an eccentric 2L0 around which is a leather bushing 42 adjustably held in position by an eccentric pivot screw 41. This is a well known construction and it is obvious that by loosening the screw 41 and turning the eccentric the center of the pivot stud is shifted as desired.

The main feature of my device is the shuttle binder A which is formed of a strip of spring metal having a loop 24 which is not entirely closed but extends around pivot stud F whereby the whole binder A can swing around thereon, and whereby this end 24- can be moved in or out as desired.

The binder A extends from 2% between the front binder B and the protector rod linger R, and has a padded short arm 25 which swells out to a point where it will engage the shuttle and is padded preferably with leather at 26 and terminates at 27 between which, and the straight portion of the long arm 23 there is a space.

The long arm 23 extends along so that it will. considerably clear 27 and thence swells out at 2i preferably to a slightly less dis tance than the swell of short arm 25, thence back to a tip 20 which preferably padded at 19 and enga ggcs the protector rod linger R. Swell 21 is padded at 22.

H is a back spring fastened to the lay beam by screws 50, 50, and extendii'ig around in a bow so that its free end 51 will engage the back of binder A. in such manner as to keep it normally in the path of the shuttle.

This is mainly a returning or placing spring. The protector rod spring is what substantially resists the forcing back of long arm 23 by the passing of the shuttle and thereby retards the shuttle.

I prefer to so adjust my check or binder that, as shown in Fig. 1, the shuttle S will engage the padded swell 22 of the long arm sutiiciently to slightly force back spring H and spring R whereby it will slide along the face 36 of front binder B losing momentum all the time until the base of its point strikes the padded swell 26 of the short arm, when a slightly wedging action will take place between it and end face 38, bringing the shuttle to a stop at the desired point.

It will be observed that on account of the difference in the leverage exerted by the shuttle on binder A at the point 22 and at the point 26, the checking pressure at the latter point is much greater and more positive than at the former.

For use in a Crompton &- Knowles loom, I may use the shuttle binder shown in Figs. -land L is the lay, H the back spring and R the r-otector rod finger while S is the shuttle with point base 31.

The ental spring M is formed with a loop from one end of which extends a long arm 62 padded at 63 and ending in a tip 60 which carries a pad 61 in contact with protector linger R.

Short aim G l padded at 65 also extends "from loop 60 and terminates in a tip 67 close to but not touching long arm 62 at 68.

This spring M is pivoted on an adjustable stud T similar to F by means of a loop 69 positioned at or slightly beyond the last point of contact of short arm G l with base 31 of shuttle S and the end of loop 66.

By so positioning the pivot, the spring does not become a lockingbinder of the rocking type but is a friction binder where in the friction constantly increases until the shuttle comes to rest.

I claim:

1. The combination in a loom having a lay, a picker, an adjustable front binder and a protector rod finger at the back; of an adjustable pivot stud; with a shuttle binder formed of a strip of spring metal having a loop pivotal on the pivot stud and extending along the lay between the front binder and the protector rod finger having a padded short arm which swells out to a point where it will engage the shuttle at the base of its point, and a padded long arm which extends behind the short arm at a distance from the end thereof and thence swells out to a slightly less distance than the swell of the short arm and back to a tip which engages the protector rod finger; and a back spring which so engages the shuttle binder as to keep the long arm normally in the path of the shuttle.

2. A shuttle check formed of a strip of spring metal having a loop, a padded short arm which swells out, and a padded long arm which extends behind the short arm at a distance from the end thereof and thence swells out to a slightly less distance than the swell of the short arm and back to a tip for engaging the protector rod.

3. In a shuttle checking mechanism for looms the combination of an adjustable shuttle box wall; with a flat metal spring bent into a loop from one end of which extends a short curved padded arm and from the other end of which extends a long curved padded arm which extends behind the short arm at a distance from the end thereof and thence swells out to a slightly less distance than theswell of the short arm, an adjustable pivot which passes through said loop; and a returning spring which engages the back of said long arm.

t. In a shuttle checking mechanism for looms, a flat metal spring bent into a loop from one end of which extends a short curved padded arm and from the other end of which extends a long curved padded arm which extends behind the short arm at a distance from the end thereof and thence swells out to a slightly less distance than the swell of the short arm.

5. The combination in a loom having a lay, a picker, a shuttle guide parallel with the shuttle race, an adjustable front binder so adjusted that its inner end is a greater distance from the shuttle guide than the width of the shuttle, a protector rod finger, and a protector rod spring which forcesthc protector rod towards the front binder at the back; of an adjustable pivot stud; with a shuttle binder formed of a strip of spring meta-l having a loop pivotal on the pivot stud and extending along the lay between the front binder and the protector rod finger having a padded short arm which swells out to a point where it will engage the shuttle. at the base of its point, and a padded long arm which extends behind the short arm at a distance from the end thereof and thence swells out to a slightly less distance than the swell of the short arm and back to a tip which engages the protector rod finger; and a back spring which so engages the shuttle binder as to keep the long arm normally in the path of the shuttle.

6. In a shuttle checking mechanism for looms, the combination of an adjustable shuttle box wall; with a fiat metal spring bent into a loop from one end of which extends a short curved, padded arm, and from the other end of which extends a long curved padded arm which extends behind the short arm at a distance from the end thereof and thence swells out to a slightly less distance than the swell of the short arm; and an adjustable pivot positioned between the nearest point of contact of the spring and the shuttle, and the end of the loop.

SAMUEL CHALMERS. FREDERICK J. FOLEY. 

